HSSE Black Coated Twist Drill Bits waxaa si gaar ah loogu talagalay in lagu shaqeeyo agabyo kala duwan oo ay ka mid yihiin birta, birta aan dahaarka lahayn, birta shubka ah, naxaasta, aluminium iyo in ka badan. Isku darka birta xawaaraha sare leh (HSS) iyo cobalt ayaa siinaya xoogaa aan caadi ahayn xoog iyo adayg...
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